/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.je.bpm.engine.impl.cmd;

import com.je.bpm.engine.ActivitiException;
import com.je.bpm.engine.ActivitiIllegalArgumentException;
import com.je.bpm.engine.impl.event.MessageEventHandler;
import com.je.bpm.engine.impl.interceptor.CommandContext;
import com.je.bpm.engine.impl.persistence.entity.EventSubscriptionEntity;
import com.je.bpm.engine.impl.persistence.entity.EventSubscriptionEntityManager;
import com.je.bpm.engine.impl.persistence.entity.ExecutionEntity;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MessageEventReceivedCmd extends NeedsActiveExecutionCmd<Void> {

    private static final long serialVersionUID = 1L;

    protected final Map<String, Object> payload;
    protected final String messageName;
    protected final boolean async;

    public MessageEventReceivedCmd(String messageName, String executionId, Map<String, Object> processVariables) {
        super(executionId);
        this.messageName = messageName;

        if (processVariables != null) {
            this.payload = new HashMap<String, Object>(processVariables);

        } else {
            this.payload = null;
        }
        this.async = false;
    }

    public MessageEventReceivedCmd(String messageName, String executionId, boolean async) {
        super(executionId);
        this.messageName = messageName;
        this.payload = null;
        this.async = async;
    }

    @Override
    protected Void execute(CommandContext commandContext, ExecutionEntity execution) {
        if (messageName == null) {
            throw new ActivitiIllegalArgumentException("messageName cannot be null");
        }

        EventSubscriptionEntityManager eventSubscriptionEntityManager = commandContext.getEventSubscriptionEntityManager();
        List<EventSubscriptionEntity> eventSubscriptions = eventSubscriptionEntityManager.
                findEventSubscriptionsByNameAndExecution(MessageEventHandler.EVENT_HANDLER_TYPE, messageName, executionId);

        if (eventSubscriptions.isEmpty()) {
            throw new ActivitiException("Execution with id '" + executionId + "' does not have a subscription to a message event with name '" + messageName + "'");
        }

        // there can be only one:
        EventSubscriptionEntity eventSubscriptionEntity = eventSubscriptions.get(0);
        eventSubscriptionEntityManager.eventReceived(eventSubscriptionEntity, payload, async);

        return null;
    }

}
